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Refrigerant leakage protection control method for multi-split air conditioners

A protection control and air conditioner technology, which is applied in the direction of control input involving air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., which can solve the problem of increased unit maintenance costs, leakage of other modules of refrigerant, failure to operate normally Work and other issues, to avoid increased maintenance costs, reasonable process, and improve application performance

Inactive Publication Date: 2015-02-25
NANJING TICA AIR CONDITIONING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once a certain module leaks refrigerant, it will cause other modules to fail to work normally due to refrigerant leakage, and cause a lot of refrigerant waste, which will increase the maintenance cost of the unit

Method used

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  • Refrigerant leakage protection control method for multi-split air conditioners

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] As shown in the figure, the multi-connected air conditioner includes multiple modules with the same structure and function. Each module communicates with a common transmission pipeline through a solenoid valve 3 . A refrigerant leakage detection sensor 1 is installed in each module, and the sensor is connected with a controller 2 in the module. Related control parameters such as detection frequency T1, refrigerant leakage amount P, leakage duration T, and repeated leakage times N are preset in the controller. Control method of the present invention comprises the following steps:

[0023] a. After the machine is running, each module will self-check whether there is any refrigerant leakage at the detection frequency T1;

[0024] b. If a module is detected to be leaking, close the solenoid valve connecting the module to the public pipeline;

[0...

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Abstract

The invention relates to a refrigerant leakage protection control method for multi-split air conditioners. The refrigerant leakage protection control method mainly includes detecting refrigerant leakage conditions and cutting off or restoring electromagnetic valves on corresponding modules and a public refrigerant pipeline according to detection results. The control method is reasonable in procedure, simple to operate and capable of controlling refrigerant leakage of the multi-split air conditioners effectively, so that increase of maintenance costs due to leakage of substantial refrigerants is avoided, normal operation of units with leakage can be kept, and application performance of the overall units is improved.

Description

technical field [0001] The invention relates to a control method of a multi-connected air conditioner, in particular to a method for protecting and controlling refrigerant leakage of a multi-connected air conditioner. Background technique [0002] At present, the working principle of the multi-connected air conditioner is as follows: the refrigerant is compressed into high-temperature and high-pressure steam by the compressor, and the refrigerant vapor releases heat in the condenser of the outdoor unit, transferring the heat to the outdoor air, and the refrigerant vapor is condensed into a high-pressure liquid , and then throttling through a throttling device such as an electronic expansion valve, it becomes a low-temperature and low-pressure gas-liquid two-phase, then passes through the evaporator of the indoor unit and absorbs the heat of the indoor air to become a low-pressure gas, and then enters the compressor, and so on; The outdoor fan drives the outdoor air to flow a...

Claims

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Application Information

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IPC IPC(8): F24F11/02
CPCF24F11/30F24F11/84F24F2110/00
Inventor 蒋立孔春光
Owner NANJING TICA AIR CONDITIONING CO LTD
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